Abstract:
:Regressing atypical histiocytosis (RAH) of skin is a cutaneous noduloulcerative proliferation of atypical neoplastic histiocytes with concomitant polymorphous inflammation, frequently pronounced epidermal hyperplasia, and an unexpectedly indolent biologic course. Spontaneous regression and recurrence without systemic spread were the course in follow-up periods of over six years. Histopathologically, characteristic-appearing atypical mononuclear and multinucleated "RAH" cells showed erythrophagocytosis as well as ultrastructural, surface marker, and enzyme cytochemical features indicating histiocytic differentiation. Cytogenetic analysis showed aneuploidy and several marker chromosomes including 14q+. Its benign biologic course clearly distinguished this entity from malignant histiocytosis, large cell lymphoma, and Hodgkin's disease. The histiocytic atypical cells further distinguished it from the T-cell lesions of the skin, such as mycosis fungoides and lymphomatoid papulosis. This entity is readily confused with malignant lymphoreticular disease, melanoma, or squamous carcinoma.
journal_name
Cancerjournal_title
Cancerauthors
Flynn KJ,Dehner LP,Gajl-Peczalska KJ,Dahl MV,Ramsay N,Wang Ndoi
10.1002/1097-0142(19820301)49:5<959::aid-cncr28204subject
Has Abstractpub_date
1982-03-01 00:00:00pages
959-70issue
5eissn
0008-543Xissn
1097-0142journal_volume
49pub_type
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